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Cleaner Lakes Than H.S. Truman Res. Nr. Dam Lake

2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

H.S. Truman Res. Nr. Dam Lake carries a Grade C (Fair) water quality score. Within 30 miles, 2 lakes hold a higher grade. Crystal-Morgan Lake (Morgan County, Grade B, 26.5 mi away) is the closest meaningful upgrade.

Reviewed by LakeQuality Editorial Team · Updated
1
B

Crystal-Morgan Lake

Morgan County, Missouri · 26.5 mi from H.S. Truman Res. Nr. Dam Lake
  • +Higher grade (C → B)
  • ++2.4 ft water clarity
  • +Lower phosphorus (15.5 vs 38.7 µg/L)
2
C

Pomme de Terre L. Lake

Hickory County, Missouri · 26.2 mi from H.S. Truman Res. Nr. Dam Lake
  • +Higher overall water quality score
  • +Lower phosphorus (25 vs 38.7 µg/L)

Reading the cohort

Within 30 miles of H.S. Truman Res. Nr. Dam Lake, 2 lakes score higher on EPA water-quality metrics than its Grade C. The short list means the alternatives are real upgrades but not interchangeable — each carries its own access, size, and species mix worth checking before substituting it into a weekend plan.

The nearest cleaner alternative — Crystal-Morgan Lake in Morgan County — sits 26.5 miles from H.S. Truman Res. Nr. Dam Lake, putting it firmly in "destination trip" rather than "neighborhood swap" range. The water-quality gap has to be the deciding factor; for a casual outing, H.S. Truman Res. Nr. Dam Lake is the practical choice and the cleaner options are reserved for purpose-specific visits.

The EPA water-quality grading combines clarity (Secchi depth), phosphorus, and chlorophyll-a measurements from state environmental sampling. A higher letter grade reflects measurably cleaner water on those indicators, not subjective beauty or access quality — a Grade A lake might have worse boat-launch facilities or shoreline access than a Grade C neighbor, so the ranking is one input alongside the rest of trip planning. See the methodology page for the full grading formula.

How this list is built

Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.

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